13420744 has 8 divisors (see below), whose sum is σ = 25163910. Its totient is φ = 6710368.

The previous prime is 13420741. The next prime is 13420747. The reversal of 13420744 is 44702431.

It is an interprime number because it is at equal distance from previous prime (13420741) and next prime (13420747).

It can be written as a sum of positive squares in only one way, i.e., 9998244 + 3422500 = 3162^2 + 1850^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13420741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 838789 + ... + 838804.

Almost surely, 2^13420744 is an apocalyptic number.

It is an amenable number.

13420744 is a deficient number, since it is larger than the sum of its proper divisors (11743166).

13420744 is a wasteful number, since it uses less digits than its factorization.

13420744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677599 (or 1677595 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 13420744 is about 3663.4333622983. The cubic root of 13420744 is about 237.6432760604.

The spelling of 13420744 in words is "thirteen million, four hundred twenty thousand, seven hundred forty-four".